Tim Arnold wrote:
> I have an external process, 'tralics' that emits mathml when you feed it
> latex equations. I want to get that mathml into a string.
>
> The problem for me is that tralics wants to talk to a tty and I've never
> done that before; it basically starts its own subshell.
>
> I have the following code which works for simple things. I'm not sure
> this is the best way though: basically I got this from google...
>
> import os,sys
> import subprocess
> import shlex
> import pty
> cmd = 'tralics --interactivemath'
>
> (master, slave) = pty.openpty()
> p = subprocess.Popen(shlex.split(cmd),close_fds=True,
> stdin=slave,stdout=slave,stderr=slave)
>
> os.read(master,1024) # start the process
> os.write(master,'$\sqrt{x}$\n') # feed it an equation
> mathml.append(os.read(master,1024)) # get the mathml in a string
>
> os.write(master,'$\sqrt{x}$\n') # feed more equations
> mathml.append(os.read(master,1024)) # get the next string
>
>
> Any suggestions for improvement?
Do you know about pexpect?
http://pypi.python.org/pypi/pexpect
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